package reflect.annotations;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;

public class Happy {
    public static void main(String[] args) throws FileNotFoundException {
        PrintWriter pw = new PrintWriter(new File("test.txt"));
        pw.println("97");
        pw.close();
        //判断文件test.txt中的内容，有则打印出来，无内容则打印“无”



    }
}
